Earth working tool



N. E. JERSEY EARTH WORKINGV TOOL April lz, 1938.

' Filed Jan. 27, 1937 5 Sheets-Sheet 1 Y 72C; By /MMM/f ATTORNEY.

April 12, 1938 I N. E. JERSEY 2,113,917

EARTH WORKING TOOL Filed Jan. 27, 1937 5 Sheets-Sheet 2 ATTORNEY.

April 12, 1938. N. E. JERSEY l 2,113,917

` EARTH WORKING TOOL Filed Jan. 27, 1937 s sheets-sheet s ATTORNEY.

- Apl'imzxlfl-v I N. E. JERSEY 113,917

EARTH WORKING TooL Fild Jan. 27, 1957 5 sheets-sheet 4 INVENTOR.

726. /M MMM ATTORNEY.

April 12, 1938; N. E. JERSEY 2,113,917

EARTH WORKING TOOL Filed Jan. 27., 19257 5 Sheets-Sheet 5 /af f97 46 /03 7 f J m/ g n i l l /02 5 95- y 77 93 92 1.84 A

X 90 47 9/ ya 59 l INVENTOR.

ATTORNEY.

Patented Apr. l2, 1938 EARTH WORKING TDCL Neil E. Jersey, Bucyrus, Ohio, assigner to W. A.

Riddell Corporation, Bucyrus, Ohio, a corporation ofv Ohio s Application January 27,1931, semi No. 122,619 s claims. (Gis1- 156) l This invention relates to an earth-working tool and has particular reference to such a tool provided with power operated adjusting or control means for the earth engaging elements such as scraper blade, scarifier or the like.

An object of theinvention is to provide atool p. of the characterindicated wherein simple and efiicient power transmission means is provided for operating the-tool adjustments or controls in either direction/and selectively at different speeds. "The most-obvious source of power for use in a self-propelled earth working tool kof the type indicated is a suitable takeoff from the power plant which propels the device. This may be either on the motor side or on the tractionelement side of the vehicle transmission. If connected in advance of the transmission, the drive will be subject to speed variations of. the motor itself according to load or the selected gear ratio between the power plant and the traction elements. If the takeoff is behind the transmission, the velocity of thepower source tool control will vary according to whether the transmission is set for high, low or intermediate speed. While I pre- 25 fer to'have the power takeoff in advance 4of the transmission, in either case it is Adesirable to provvide a change speed gearing between the source of power. and the tool controls whereby to compensate for the diiferences in speed of the power 30 source. The change speed mechanism'is also desirable for the purpose of enabling the operator to select a faster or slower rate of tool control `operation depending upon the nature of the tool control itself, the amount of change desired and 351 the working conditions and without the necessity of changing the motor speed.

A further Objectis to provide a device capable of attaining the above object and in which a simple and emcient reverse` gearing is introduced 40 in series with the vchange speed gearingbetween the power takeoff and the tool controls,` a reverse `gearing being provided for each tool control.

' A still further object is to provide a novel transmission combining in a unitary structure the change speed andreverse gearing above referred to and providing'simple and highly convenient controls for realizing the selective features of the device and which will be conveniently positioned for easy access by an operator at the operatcrs station.

Other and more limited objects will be in part 'apparent and in part pointed out hereinafter in connection with 'the accompanying drawings wherein Fig. 1 is a schematic fragmentary plan 55"*view of a self-propelled'road working vehicle embodying the invention; Figs. 2 and n3 are sections corresponding substantially to the lines 2-2 and 2-2 of Fig. 1, also to the lines 2--2 and 3 3V of l Fig. 4; Fig.`.4 is a section corresponding substan- 60 tiallyto the line l-l'of Fig. 2; Fig. 5 is a section l Carried by the frame I0 centrally thereof is a scraper attachment comprising radius rods'` I6 secured at their forward ends to a block I1 which is inturn pivoted to the frame I0 for rotation about a horizontal axis at a point approximately in line with the front axle I8. v'I'he pivot point of the radius rods I6 is not shown on the drawings. 'Ihe radius rods I6 are connected to a nonrotatable circle element I9 which is concentric with a rotatable circle element 20 and forms a journal or V bearing therefor. Connected to the circle member I9 and to the rear ends of the radius rods Ii isatransverse bar 2i to the outer ends of which are universally connected verti` cally extending shafts 22, the upper ends of which are threaded and received in threaded portions of 'pivotally mounted blocks 23. The blocks l23 are pivoted in yokes 24 which are supported on the cross rod 25. The cross rod 25 is attached to the frame IIi by suitable bearings `lili. The blocks 23 are provided internally with gear elements, not shown, .a driven one of which is threaded on the shafts 22 and a driving one of which is carried by a shaft 21 which extendsto the control box A positioned at the 'operators station I5. The shaft 21 is. provided with suitable universal joints to take care of its change in 'direction.

The outer circle element 20 is provided with gear teeth which mesh with a pinion, not shown, which is mounted in fixed relation to the inner circle member I9 onk a suitable bracket. (not shown). The said pinion is carried by a shaft 28 which comprises telescoping portions so related to each other as to allow extension in length but to prevent rotation of the two parts with respectv to each other. This shaft is lalso provided with suitable universal joints and the upper end of the upper portion is threaded and carries a worm gear housed in a gear box 29. A worm meshes, with the said vworm gear and is carried by the shaft 30 whichextendsthrough suitable universal joints'to the control box A'.

Pivoted to the framework as indicated at' 3l are links '32 which extend rearwardly and downwardly and carryat their lower ends a scariiier head 33 towhichare secured suitable teeth 34. Rotatably mounted on the frame II) is a shaft 35 provided with crank arms 3E at its ends. ISuitable links 31 connect the` arms 36 with the lower ceives one end of the shaft 45.

ends of the links 32 so that by rotation of the shaft 35 the scarifier is raised and lowered. lMounted on the shaft 35 is a wormgear housed in a casing 38 which casing journals a worm carried by a shaft 39 extending to the control box A.

Obviously, other tool controls may be provided and other control shafts for operating the same may be suitably driven from the control box A,l the construction of which will be described in detail hereinafter. illustrated in Fig. 1 is provided with afurther control for determining the lateral position of the circle, such control being applied to a laterally extending thrust member connected between the frame and the circle. "As will be apparent fromFig. 1 the device shown has the power plant and traction elements located at the rear. In actual practice a control box according to the invention has been applied to a device of this kind and the power takeoff was from the front end of the crank shaft 48, as indicated in Fig. 1. A suitable gear box 4| encloses a gear which meshes with a pinion carried by the crank shaft 48. Such gear rotates an upwardly extending shaft 42 which in turn transmits power through a gear box 43 to a power shaft 44.

Referring now to Figs. 2-7 inclusive, the control box A will be described. The power shaft 44 is connected to a drive shaft 45 which is journaled in suitable bearings in the casing elements 46 and 41. Journaled onthe Ashaft 45 for free rotation are high and low speed gears 48 and 49, respectively. Splined on the shaft 45 for reciprocating motion is a selector 58 in the nature of a collar providedv centrally with a groove 5| adapted to receive an operating yoke 52 and carrying clutch elements 53 and 54 on the .two faces thereof. The motion of the operating yoke 52 is controlled by a reciprocating rod 55 which is slidably mounted in the housing elements 46 and 41. At one end of the shaft 55 the same is pivoted to a lever 56 which is provided at its lower end with a spherical portion' 51 received in a cylindrical bore 58 in a bracket 59. The bracket 69 also provides a cover for the bore 68 which re- The shaft 55 is yieldably held either in neutral position or in position tov engage the element 58 with one or the other of the gears 48 and 49 by a spring pressed ball 6| received in a selected one of three part spherical depressions 62, 63 and 64 formed in the shaft 55. 'Ihe ball 6| is yieldably held in place by a spring 65 which is adjustably held in position by a threaded element 66 and lock nut 61. 'I'he gears 48 and 49 are provided with clutch elements 68 and 69 which are respectively complementary to the clutch elements 53 and 54 carried by the collar 58. It is obvious from the foregoing that when the shaft 45 is being driven by the vehicle motor that by operation of the handle 18, the shaft 45 may beconnected in driving relation to either of the gears 48 and 49 but not to both simultaneously.

Journaled in suitable bearings in the housing members 46 and 41 and spaced from the shaft 45 is a shaft 1| to which are keyed gears 12 and 13 meshing at all times with gears 48 and 49. respectively. Integral with the gear 13 is a smaller gear 14 which is constantly in mesh with the gears 15 and 16. The gears 15 and 16 are .in turn constantly in mesh with gears 11 and 18, respectively.

Below the shaft 1| and spaced therefrom is a shaft 19 Journaled in the casing elements 46 and In actual practice, the devicel Y cal portion 99 received in 41 and carrying a gear 88. This gear may have a tight fit with the shaft 19 so that it rotates in the journals provided in the casing elements and need not be provided with a separate bush-` ing. It will be noted that the gear 88 is of a thickness about double that of the toothed portion of the gear 12 so that a portion thereof is available without interference with the operation of the gear 12 to mesh with other gears. That portion of the gear 88 which does not coact with the teeth of the gear 12 meshes with the gears 8| and 82 which are of a thickness not to interfere with the gear 12, as best seen in Figs. 2 and 6. The gears 8| and 82 mesh with gears 83 and 84, respectively. It will thus be apparent that there is yonly a single `rotating element consisting ofgears 13 and 14 interposed between the low speed gear 49 and the gears 15 and 16, whereas there are two rotating elements, gears 12 and 88, interposed between the high speed gear 48 and the gears 8| and 82. The gears 11 and 84 are both mounted on the shaft 85 and thus constitute a pair, the same vis true of the gears 82 and 15 mounted on the shaft 86, the gears 8| and 16 mounted on the shaft 81 and the gears 83 and 18 mounted on the shaft 88. It will thus be clear that the corresponding gears of each pair will rotate in opposite directions.

In Fig. 5, I have shown one reversing gear unit, the construction of which is identical with that of the other three. With the exception of the differences in the showing of the housing, Fig. 5 might be a section taken centrally through any one of the shafts 85, 86, 81 or 88. As will be clear from the drawings, the gears 11 and 84 are free to rotate on the shaft 85. f

Splined on the shaft 85 is a collar element 89 which is provided on its two faces with clutch elements 98 and 9| complementary to clutch elements 92 and 93 on the gears 84 and 11, respectively. The collar element 89 is provided with a groove 94 adapted to receive a yoke 95 for the purpose of engaging the collar 89 selectively with the gears 11 and 84 whereby totransmit power from such gears through the shaft 85 to the tool control shaft 21. The yoke 95 is carried by a reciprocating shaft 96 which is operated by a lever 91 provided with a handle 98 and a spheria cylindrical bore in a bracket |88. The shaft 96 is held ln'neutral position by a ball I 8| yieldably received in a depression |82 and urged into the position shown in Fig. 5 by a spring |83. The spring |83 is adjustably held in position by a threaded element |84 and lock nut |85.

Similar control elements are provided for the gears associated with the shafts 86, 81 and 88 and these elements are operated by handles |86, |81 and |88, respectively. The shafts 86, 81 and 88 are connected to the shafts 30, 39 and 21, respectively. 1

From the foregoing, it will be obvious that when the control handle 18 for the change speed gearing is in the rposition shown in Fig. 4, the shaft 45 will rotate idly and all other mechanism in the Vcontrol box A will be idle, that when the handle 18 is moved to engage either of the gears 48 and 49, all the gears in the control box will rotate, the speed alone being different depending upon which of the gears 48 and 49 is engaged with the power y shaft 45. It will also be apparent that when one will rotate in one or the oth'er direction depending .upon which one of the gears of each pair is engaged with the power output shaft and consequently upon the'position of the reversing handle corresponding to that shaft.

In order to operate any selected tool control, it will be necessary rst to set the handle I0 at the desired speed and then operate the proper handle 98, |06, |01 or |08 in one direction or the other depending upon whether a forward or reverse motion is desired.

While I, have shown and described the present preferred embodiment of my invention, I wish it understood that the same may be realized in varying structures and that I am limited only in accordance with the appended claims and the prior art.

Having thus described my invention, what I claim is:

1. In an earth working tool, in combination with a plurality of tool adjusting devices to be operated, meansdjor operating such devices, reversing gear mechanism for each of said last means, having driving and driven elements, the driven element of each said reversing gear mechanism being connected in driving relation to one of said last means, a change speed gearing having driving and driven elements, the driven element oi' said change speed gearing being connected in driving relation to the driving elements of said reversing gear mechanisms, and power means for rotating the driving element of said change speed gearing.

2. In an earth working tool, in combination with a plurality of tool adjusting devices to be operated, means for operating such devices, reversing gear mechanism for each of said last means, having driving and driven elements, the driven element of each said reversing gear mechanims being connected in driving relation to one of said last means, a change speed gearing having driving and driven elements, the driven element of said change speed gearing being connected in driving relation to the driving elements of said reversing gear mechanisms, and power means for rotating the driving element of said change speed gearing, each of said gearing mechanisms being p provided with a control handle and all said handles being positioned adjacent each other whereby to be in convenient reach of the operator.

3. In a self propelled earth working tool, steerable wheels, power plant, traction elements and operators station, all connected by a suitable framework, together with controlling means for said steerable wheels and traction elements extending to said operators station, in combination with one or more.earth engaging elements each having one or more adjusting devices, rotary means for operating such devices, reversing gear mechanism for each of said last means, having driving and driven elements, the driven element of each said reversing gear mechanism being connected in driving relation to one of said last means, a change speedvgearing having driving and driven elements, the driven element of said change speed gearing being connected in driving relation to the driving elements of said reversing gear mechanisms, and means driven from said power plant for rotating the driving element of said change speed gearing, said change speed gearing and each of said reversing gear mechanisms being provided with an operating handle and all said handles being located within easy `reach of an operator at said operators station,

4. In a self-propelled earth working tool, steerable wheels, power plant, traction elements and operator's station, all connected by a suitable framework, together with controlling means for said steerable wheels and traction elements extending to said operators station, in combination with one or more earth engaging elements each having one or more adjusting devices, rotary means for operating such devices, reversing gear mechanism for each of said last means, having driving and driven elements, the driven element of each said reversing gear mechanism being connected in driving relation to one of said last means, a change speed gearing having driving and drivenxelements, the driven element of said change speed gearing being connected in driving relation to the driving elements of said reversing gear mechanisms, and means driven from said power plant for rotating the driving element of said change speed gearing, said change speed gearing and each of said reversing gear mechanisms being provided with an operating handle and all said handles being located within easy Vreach of an operator at said operators station,

the operating handles for said reversing gear mechanisms being arranged in a compact group and the operating handle for said change speed gearing being set apart from said group.

5. In a self-propelled earth working tool having steerable Wheels, power plant, transmission, traction elements and operators station, all connected by a suitable framework, together with controlling means for said steerable wheels and said transmission extending to said operators station, in combination with-one or more earth engaging elements, each having one or more adjusting devices, means for operating such devices, reversing gear mechanism for eachof said last means, having driving and driven elements, the driven element of each of said reversing gear mechanism being connected in driving relation to one of said last means, a change speed gearing having driving and driven elements, the driven element of said change speed gearing being connected in driving relation to the driving elements of said reversing gear mechanisms, and means driven from said power plant for rotating the driving element of said change speed gearing, said power means comprising mechanism connected with said power plant in advancev of said transmission whereby to be driven independ-` ently thereof.

6. A power transmission device comprising, in combination, a drive shaft, spaced drive shaft gears of different diameters loosely carried thereby and rotatable thereon, means for selectively engaging said drive shaft with either of said drive shaft gears, a driven shaft spaced from said drive shaft, spaced driven shaft gears iixed on said driven shaft and meshing with said first mentioned spaced gears, respectively, means connecting each of said driven shaft gears in driving relation to a series of intermeshing reversing gears for rotation of the corresponding gears of each series in opposite directions, corresponding gears of said series being arranged in coaxial pairs, a power output shaft for each pair of gears, said gears of each pair being journaled on their-corresponding shafts for rotation, with respect thereto, and means associated with each pair of reversing gears for selectively engaging either gear of that pair with its power output shaft.

NE1L E. JERSEY'. 

